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Mathematical expressions for calculation of oil‐polymer blends
Author(s) -
Dutt Nidamarthy V. K.,
Sreekumar Gudipati,
Ravikumar Yerrapragada V. L.,
Chalapathi Rao Mannava G. V.
Publication year - 2005
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.200401083
Subject(s) - linseed oil , materials science , glass transition , polystyrene , polymer , melting point , iodine value , polyester , composite material , viscosity , specific rotation , polymer chemistry , organic chemistry , chemistry
A study of the recent literature emphasized the importance of blending polymers with oils for improving the performance characteristics (like flexibility, corrosion resistance, etc. ) of adhesives, coatings and laminates. Investigation of the available data revealed that several properties of such oil‐polymer blends could be correlated by molar refraction (R M ), with reasonable accuracies. The properties of the linseed oil‐polystyrene (PS) and linseed oil‐polymethyl methacrylate (PMMA) blends studied are iodine value (IV), hydroxyl value (HV), inherent viscosity (η), melting temperature (T M ), and glass transition temperature (T g ). In the case of safflower, palm and peanut oil‐sucrose polyester formulations, the viscosity at 40 °C (η 40 ) and the melting point T M have been correlated by R M with the average absolute deviations (ē) of 17.8% and 3.0%, respectively. Using the orientation polarization P O (to represent polarity) in addition to R M , η 40 and T M of oil‐polyester formulations could be calculated with ē values of 8.9% and 1.7%, compared to 17.8% and 3.0% using R M alone. The results indicated the importance of P O in improving the accuracy of predictions for properties.